Question

In an article in the Journal o Management, Joseph Ma occhio studied and estimated the costs o employee absences. Based on a sample o 176 b e-o ar o ars, a occhю estimated hat he mean amount of paid time lost during a three-month period was 1.3 days per employee with a standard deviation of 1.1 days. Martocchio also estimated that the mean amount of unpaid time lost during a three-month period was 1.4 day per employee with a standard deviation of 1.7 days. Suppose we randomly select a sample of 100 blue-collar workers. Based on Martocchio's estimates (a) What is the probability that the average amount of paid time lost during a three-month period for the 100 blue-collar workers will exceed 1.5 days? (Round means to 1 decimal place, standard deviations to 2 decimal places, and probabilities to 4 decimal places.) (b) What is the probability that the average amount of unpaid time lost during a three-month period for the 100 blue-collar workers will exceed 1.5 days? (Round standard deviations to 2 decimal places and probabillties to 4 decimal places. OR Probability (c) Suppose we randomly select a sample of 100 blue-collar workers, and suppose the sample mean amount of unpaid time lost during a three-month period actually exceeds 1.5 days. Would it be reasonable to conclude that the mean amount of unpaid time lost has increased above the previously estimated 1.4 days? Click to select)the probability of observing the sample is (Click to select) if the mean is actually 1.4

Answer 1

1-7 day- TOD z I-0.7224 lust๑g z-table

I have solved the question here , for the part C you have not provided the drop down s , so please fill it according to the answer. And if you are facing any problems in it please comment the drop down I will help you